Home > Database > Mysql Tutorial > body text

常用精典sql语句集合

WBOY
Release: 2016-06-07 17:46:55
Original
1263 people have browsed it

下面提供的确一些常用的sql语句哦,都是比较经典语句,现在把它们收藏起写到我的博客空间,与大家一起分享哦。

下面提供的确一些常用的sql语句哦,都是比较经典语句,现在把它们收藏起写到我的博客空间,与大家一起分享哦。

SQL: select * into b from a where 11   


  说明:拷贝表(拷贝数据,源表名:a 目标表名:b)

  SQL: insert into b(a, b, c) select d,e,f from b;  

  说明:显示文章、提交人和最后回复时间

 


  SQL: select a.title,a.username,b.adddate from table a,(select max(adddate) adddate from table where table.title=a.title) b  

 


  说明:外连接查询(表名1:a 表名2:b)

 

 


  SQL: select a.a, a.b, a.c, b.c, b.d, b.f from a LEFT OUT JOIN b ON a.a = b.c   

软件开发网

 

  说明:日程安排提前五分钟提醒

软件开发网

  SQL: select * from 日程安排 where datediff('minute',f开始时间,getdate())>5   


  说明:两张关联表,删除主表中已经在副表中没有的信息 软件开发网



  SQL:


  delete from info where not exists ( select * from infobz where info.infid=infobz.infid )   

SELECT A.NUM, A.NAME, B.UPD_DATE, B.PREV_UPD_DATE FROM TABLE1,(SELECT X.NUM, X.UPD_DATE, Y.UPD_DATE PREV_UPD_DATE FROM (SELECT NUM, UPD_DATE, INBOUND_QTY, STOCK_ONHAND FROM TABLE2 WHERE TO_CHAR(UPD_DATE,'YYYY/MM') = TO_CHAR(SYSDATE, 'YYYY/MM')) X, (SELECT NUM, UPD_DATE, STOCK_ONHAND FROM TABLE2 WHERE TO_CHAR(UPD_DATE,'YYYY/MM') = TO_CHAR(TO_DATE(TO_CHAR(SYSDATE, 'YYYY/MM') ¦¦ '/01','YYYY/MM/DD') - 1, 'YYYY/MM') ) Y, WHERE X.NUM = Y.NUM ( )AND X.INBOUND_QTY NVL(Y.STOCK_ONHAND,0) X.STOCK_ONHAND ) B WHERE A.NUM = B.NUM   



  SQL:

  select * from studentinfo where not exists(select * from student where studentinfo.id=student.id) and 系名称='"&strdepartmentname&"' and 专业名称='"&strprofessionname&"' order by 性别,生源地,高考总成绩

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template